Staircase preform with wood trim

Abstract

A curved stairway preform designed to be finished in trim thereby simulating a completely wooden curved stairway.

What is claimed is: 
     
       1. A unitary, seamless one piece curved stairway comprising: a pair of spaced, curved, generally parallel stringer means extending vertically;   at least two tread means spaced vertically along and extending between the stringer means and formed integrally therewith whereby the at least two tread means follow the curve of the stringer means to define vertical steps; and   at least one riser means extending between the at least two tread means and the stringer means and formed integrally with the tread means and the stringer means wherein the stringer means, the tread means and the riser means form a unitary, seamless one piece curved stairway.   
     
     
       2. A stairway according to claim 1 wherein the stairway is fabricated of fiberglass reinforced plastic. 
     
     
       3. A stairway according to claim 1 wherein at least one of said pair of stringer means includes flange means for securing the stairway to a rigid member. 
     
     
       4. A stairway according to claim 3 wherein the flange means is offset from the at least one of said pair of stringer means to define a first shoulder means operable to support panel means. 
     
     
       5. A stairway according to claim 1 wherein at least one of said stringer means includes a recess for receiving an end portion of a second tread means. 
     
     
       6. A stairway according to claim 5 wherein the second tread means is fabricated of wood and overlays said first tread means, a portion of said second tread means being received in said recess. 
     
     
       7. A stairway according to claim 6 including fastening means for securing said first and second tread means together securely. 
     
     
       8. A stairway according to claim 1 wherein a second tread means fabricated of wood overlays each said at least two tread means. 
     
     
       9. A stairway according to claim 8 wherein said second tread means projects over a riser. 
     
     
       10. A stairway according to claim 8 wherein said second tread means projects over at least one of said pair of stringer means. 
     
     
       11. A stairway according to claim 8 wherein at least one of said pair of said first stringer means includes a recess for receiving end portions of said second tread means.